Machine for fob-ming or cutting out the grooves on the insides of the



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UNITED sTATEs PATENT oFFroE. i

JAMES S. BROWN, OF PAWTUCKET, MASSACHUSETTS.

MACHINE FOR FORMING OR CUTTING OUT THE GROOVES ON THE INSIDES OF THE FLIERS 0F yDOUBLE SPEEDERVS.

Specification of Letters Patent No. 8291,V dated July 9, 1838.

To all 'inkom it may concern.'

Be it known that I, JAMES scription thereof. n

The design of this machine isV to form the groove of the insides of Hie-rs which are cast solid, by meansV of revolving cutters adapted to that purpose.

In the accompanying drawing Figure `l. is a perspective view of thewhole machine, as it appears when in operation. Fig. 2,is a plan of that part which would be seen when the top was removed on the line A, B, Fig. 1. Fig. 3, is a plan of the bed in which the Hier is held during the operation of cutting the groove; together with the frame on which the bed rests and moves. Fig. 4,'

shows the under side of the bed. Fig. 5, Vis the frame which contains the worm or endless screw, with its appendages, to be presently explained. Fig. 6, is a section of the bed and the frame upon which it rests and slides, showing also the roll and pinion on the top of the center shaft, for giving motion to the bed. Fig. 7, is a vertical section from end to end, and through the center of the machine, the same numbers designating similar parts in all the Hgures.

The machine may be driven by any suitable power, which is to be applied to the pulley 1, Fig. 1. and 2; this pulley is attached to the horizontal shaft 2, which bly means of the bevel gear a, a, gives motion to a vertical shaft, carrying the coned or graduated pulley 3, which is belted to the coned pulley 4. On the upper end of the vertical shaft of this pulley, there is another marked 5, which is belted to a whirl on arbor 6, in the lower end of which there is a socket for holding the tools by which the groove is to be formed. From the upper end of this arbor (6) a belt is passed to pull.

ley 7, upon the shaft b, b, on the lower end of this shaft is the bevel gearing c, c, which carries the horizontal shaft` on `which are the pulleys 8. From these a belt passes which carries the pulley 9, on the shaft of which is the worm, or endless screw 10,. which gears into, and moves the horizontal,

wheel 11, on the center shaft 12. The shaft groove 14, 4, on the underside of the bed piece 17 This 1s shown in the section Fig. 6, where the upper end 13, of the shaft.

.is shown as within the groove 14. A pinwhich may terminate in a friction roller, and is to be made perfectly smooth and true, so as to pass freely along the groove 14, on one edge of this curvedlgroove, and attached, to the` lower side of the bed, is a toothedrack adapted to the curvature of the groove, which isthe same with that of the Hier to be grooved. The pinion V15, takes into this toothed rack, and by its revolution moves the bed piece in the direction or the groove. To enable it to do this, there are grooves d, d, on the underside of the bed piece 17, adapted to tongues, or ways, 20, on

c j c j 12 extends up to such a heightV as to enter a S. BROWN, of Pawtucket, `in the county of Bristol and State of Massachusetts,have invented a new and useful Machine for Forming or Boringl Out the Grooves on the Inside of Fliers for Double Speeders; and I do hereby declarev that the following is a full and exact de-` as to receive the upper end of the shaft 12,

the frame 18; and in like manner the frame j 18 slides longitudinally on the tongues, or ways 19. The standard 21, which rises from the frame of the machine supports the head stock, with the set-screws, and other appurtenances for carrying and adjusting the cutters.

22 is a slide in which the head stock is held, and is so fitted to the standard as that it may move freely crosswise, by means of the adjusting screw 24. A

No. 23 is that part of the head stock in which the arbor 6, is held; it is so Htted as to move freely up and down; and is adjusted by means of the screw 25. The set screw 26 is that by which the height of the head stock is adjusted to the depth ofthe groove which is to be made in the Hier.

The frame 30, which sustains the endless screw 10, is made to swing so far as is necessary to throw it out of gear with the wheel 11; for this purpose a handle 31 is at` tached to it; 32 being a spring which holds the handle in place when the' worm,` or endless screw is in gear. When the machine is in operation the Hier must be held firmly;-

this is done by means of clamps marked 34,

monly used for forming 'bulletfmold's These tools are-*entered at thel side-ofthe- Hier, at 28, Fig. 3, by bringing the slide' 22 forward, by means ofthe screw 24, until the 'tool will pass down by the side ,ofv the flier,

the'wvorm lO, kbeingA disengaged fromthe"` vvheel 1l. The machine is put^`inmotion,

and the slide is moved gradually back by the Y screw, until theitool is'in the oenter'fof the The Worm is then engaged with the" Having thus fullyprdescrbedthe manner inl which 1 construct 'my Vmachine for outtingthe-grooves in ers, and pointed out `its mode of operation, I Will observe that I do not intend .by thsldescription to limit myself Ato the precise arrangementvof the respective parts-herei-nset forth, butto-vary wthesev as I5 may think proper WhileV as a Wholeht remains substantially the same.

`Vlliat Ir claim'asymy invention, and desire to Secure by Letters Patent beingd The cutting of the groove by revolving Ycutters,against which the fliery is borne' and movedbya revolving shaft, guide groove pinionfand curved rack, -vvith the respective parts combined, andk operating together, in the manner'dese'ribedf f v- Y JAMES S.- BROWN.

Witnesses-z Y v Y ALANsoN THAYER, Y Y *JAs O; STARKWEATHER, 

